The VERTEX 2-Stroke Pistons are gravity cast from an aluminum alloy with an 18% silicon content. The presence of silicon reduces thermal expansion at operating temperature, making the piston less prone to rattling and structural damage. Additionally, silicon enhances wear characteristics, thereby extending the lifespan of the piston. The kit includes the piston, piston ring(s), piston pin, and piston pin circlips. Piston configurations for 2-stroke engines are available in Replica (standard form), Race (performance-enhancing design), and Pro Race (forged specialty piston).